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<header class="api-profile-header">
  <h1 class="api-profile-header-heading">ngSwitch</h1>
  <ol class="api-profile-header-structure naked-list step-list">
    
    <li>
      - directive in module <a href="api/ng">ng</a>
    </li>
  </ol>
</header>



<div class="api-profile-description">
  <p>The <code>ngSwitch</code> directive is used to conditionally swap DOM structure on your template based on a scope expression.
Elements within <code>ngSwitch</code> but without <code>ngSwitchWhen</code> or <code>ngSwitchDefault</code> directives will be preserved at the location
as specified in the template.</p>
<p>The directive itself works similar to ngInclude, however, instead of downloading template code (or loading it
from the template cache), <code>ngSwitch</code> simply chooses one of the nested elements and makes it visible based on which element
matches the value obtained from the evaluated expression. In other words, you define a container element
(where you place the directive), place an expression on the <strong><code>on=&quot;...&quot;</code> attribute</strong>
(or the <strong><code>ng-switch=&quot;...&quot;</code> attribute</strong>), define any inner elements inside of the directive and place
a when attribute per element. The when attribute is used to inform ngSwitch which element to display when the on
expression is evaluated. If a matching expression is not found via a when attribute then an element with the default
attribute is displayed.</p>
<div class="alert alert-info">
Be aware that the attribute values to match against cannot be expressions. They are interpreted
as literal string values to match against.
For example, <strong><code>ng-switch-when=&quot;someVal&quot;</code></strong> will match against the string <code>&quot;someVal&quot;</code> not against the
value of the expression <code>$scope.someVal</code>.
</div>
</div>




<div>
  

  
  <h2>Directive Info</h2>
  <ul>
    <li>This directive creates new scope.</li>
    <li>This directive executes at priority level 1200.</li>
    
  </ul>

  
  <h2 id="usage">Usage</h2>
  <div class="usage">
  
    <pre><code>&lt;ANY ng-switch=&quot;expression&quot;&gt;
  &lt;ANY ng-switch-when=&quot;matchValue1&quot;&gt;...&lt;/ANY&gt;
  &lt;ANY ng-switch-when=&quot;matchValue2&quot;&gt;...&lt;/ANY&gt;
  &lt;ANY ng-switch-default&gt;...&lt;/ANY&gt;
&lt;/ANY&gt;
</code></pre>

  
  </div>
  
  <h2 id="animations">Animations</h2>
  <p>enter - happens after the ngSwitch contents change and the matched child element is placed inside the container
leave - happens just after the ngSwitch contents change and just before the former contents are removed from the DOM</p>

  <a href="api/ngAnimate/service/$animate">Click here</a> to learn more about the steps involved in the animation.
<section class="api-section">
  <h3>Arguments</h3>

<table class="variables-matrix input-arguments">
  <thead>
    <tr>
      <th>Param</th>
      <th>Type</th>
      <th>Details</th>
    </tr>
  </thead>
  <tbody>
    
    <tr>
      <td>
        ngSwitch
        | on
        
      </td>
      <td>
        <a href="" class="label type-hint type-hint-object">*</a>
      </td>
      <td>
        <p>expression to match against <code>ng-switch-when</code>.
On child elements add:</p>
<ul>
<li><code>ngSwitchWhen</code>: the case statement to match against. If match then this
case will be displayed. If the same match appears multiple times, all the
elements will be displayed.</li>
<li><code>ngSwitchDefault</code>: the default case when no other case match. If there
are multiple default cases, all of them will be displayed when no other
case match.</li>
</ul>

        
      </td>
    </tr>
    
  </tbody>
</table>

</section>
  


  
  <h2 id="example">Example</h2><p>

<div>
  <a ng-click="openPlunkr('examples/example-example94', $event)" class="btn pull-right">
    <i class="glyphicon glyphicon-edit">&nbsp;</i>
    Edit in Plunker</a>

  <div class="runnable-example"
      path="examples/example-example94"
      module="switchExample"
      deps="angular-animate.js"
      animations="true">

  
    <div class="runnable-example-file" 
      name="index.html"
      language="html"
      type="html">
      <pre><code>&lt;div ng-controller=&quot;ExampleController&quot;&gt;&#10;  &lt;select ng-model=&quot;selection&quot; ng-options=&quot;item for item in items&quot;&gt;&#10;  &lt;/select&gt;&#10;  &lt;code&gt;selection={{selection}}&lt;/code&gt;&#10;  &lt;hr/&gt;&#10;  &lt;div class=&quot;animate-switch-container&quot;&#10;    ng-switch on=&quot;selection&quot;&gt;&#10;      &lt;div class=&quot;animate-switch&quot; ng-switch-when=&quot;settings&quot;&gt;Settings Div&lt;/div&gt;&#10;      &lt;div class=&quot;animate-switch&quot; ng-switch-when=&quot;home&quot;&gt;Home Span&lt;/div&gt;&#10;      &lt;div class=&quot;animate-switch&quot; ng-switch-default&gt;default&lt;/div&gt;&#10;  &lt;/div&gt;&#10;&lt;/div&gt;</code></pre>
    </div>
  
    <div class="runnable-example-file" 
      name="script.js"
      language="js"
      type="js">
      <pre><code>angular.module(&#39;switchExample&#39;, [&#39;ngAnimate&#39;])&#10;.controller(&#39;ExampleController&#39;, [&#39;$scope&#39;, function($scope) {&#10;  $scope.items = [&#39;settings&#39;, &#39;home&#39;, &#39;other&#39;];&#10;  $scope.selection = $scope.items[0];&#10;}]);</code></pre>
    </div>
  
    <div class="runnable-example-file" 
      name="animations.css"
      language="css"
      type="css">
      <pre><code>.animate-switch-container {&#10;  position:relative;&#10;  background:white;&#10;  border:1px solid black;&#10;  height:40px;&#10;  overflow:hidden;&#10;}&#10;&#10;.animate-switch {&#10;  padding:10px;&#10;}&#10;&#10;.animate-switch.ng-animate {&#10;  transition:all cubic-bezier(0.250, 0.460, 0.450, 0.940) 0.5s;&#10;&#10;  position:absolute;&#10;  top:0;&#10;  left:0;&#10;  right:0;&#10;  bottom:0;&#10;}&#10;&#10;.animate-switch.ng-leave.ng-leave-active,&#10;.animate-switch.ng-enter {&#10;  top:-50px;&#10;}&#10;.animate-switch.ng-leave,&#10;.animate-switch.ng-enter.ng-enter-active {&#10;  top:0;&#10;}</code></pre>
    </div>
  
    <div class="runnable-example-file" 
      name="protractor.js"
      type="protractor"
      language="js">
      <pre><code>var switchElem = element(by.css(&#39;[ng-switch]&#39;));&#10;var select = element(by.model(&#39;selection&#39;));&#10;&#10;it(&#39;should start in settings&#39;, function() {&#10;  expect(switchElem.getText()).toMatch(/Settings Div/);&#10;});&#10;it(&#39;should change to home&#39;, function() {&#10;  select.all(by.css(&#39;option&#39;)).get(1).click();&#10;  expect(switchElem.getText()).toMatch(/Home Span/);&#10;});&#10;it(&#39;should select default&#39;, function() {&#10;  select.all(by.css(&#39;option&#39;)).get(2).click();&#10;  expect(switchElem.getText()).toMatch(/default/);&#10;});</code></pre>
    </div>
  

    <iframe class="runnable-example-frame" src="examples/example-example94/index.html" name="example-example94"></iframe>
  </div>
</div>


</p>

</div>


